Obisidian vault auto-backup: 31-03-2025 14:45:08 on macbook-air-de-felix. 3 files edited

.obsidian/workspace.json

@@ -128,7 +128,7 @@
             }
           }
         ],
-        "currentTab": 2
+        "currentTab": 1
       }
     ],
     "direction": "vertical"
@@ -299,10 +299,10 @@
       "obsidian-git:Open Git source control": false
     }
   },
-  "active": "dd68e5b05b3d11c5",
+  "active": "05fb2e0f4e86352f",
   "lastOpenFiles": [
-    "ISEN/STM32/CIPA3/STM32 Cours 3.md",
     "ISEN/STM32/CIPA3/STM32 Cours 2.md",
+    "ISEN/STM32/CIPA3/STM32 Cours 3.md",
     "ISEN/STM32/CIPA3/STM32 Cours 1.md",
     "ISEN/Maths/CIPA3/DM1.md",
     "gitignore.md",

ISEN/STM32/CIPA3/STM32 Cours 2.md

@@ -65,31 +65,38 @@ Bit masking has the following purpose
 ### Masking on the higher nibble
 |     | 1001 0101 |
 | :-: | :-------: |
-| OR  | 0000 1111 |
+| AND | 0000 1111 |
 |  =  | 0000 0101 |
 ### Masking on the lower nibble
 |     | 1010 0101 |
 | :-: | :-------: |
-| OR  | 1111 0000 |
+| AND | 1111 0000 |
 |  =  | 1010 0000 |
 ## Querying Status Bit
 ### Check Status bit 3
 |     | 1001 1101 |
 | :-: | :-------: |
 | AND | 0000 1000 |
-| OR  | 0000 1000 |
+|  =  | 0000 1000 |
 
 |     | 1001 0101 |
 | :-: | :-------: |
 | AND | 0000 1000 |
-| OR  | 0000 0000 |
+|  =  | 0000 0000 |
 
 ## Toggling a Bit
-### Check Status bit 3
+### Toggling on byte
+
 |     | 1001 1101 |
 | :-: | :-------: |
 | XOR | 1111 1111 |
-| OR  | 0000 1000 |
+|  =  | 0110 0010 |
+### Toggling on the lower nibble (bits 0, 1, 2, 3)
+
+|     | 1001 1101 |
+| :-: | :-------: |
+| XOR | 0000 1111 |
+|  =  | 1001 0010 |
 
 
 # Langage C

ISEN/STM32/CIPA3/STM32 Cours 3.md

@@ -49,7 +49,15 @@ Déterminer les masques et la logique pour obtenir les résultats suivant
 		1. `GPIOA &= ~(1 << 4);`
 		2. `GPIOA &= ~(1 << 0);`
 3. Changer l’état du bit 4 
+	1. Porte logique utilisée  **XOR**
+	2. Masque  `0b00000000 00000000 00000000 00010000`
+	3. Opération:
+		1. `GPIOA ^= (1 << 4);`
 4. Vérifier si le bit 5 est à 1
+	1. Porte logique utilisée  **AND**
+	2. Masque  `0b00000000 00000000 00000000 00100000`
+	3. Opération:
+		1. `if (GPIOA & (1 << 5))`
 
 ---
 &copy; Félix MARQUET